Physics

posted by .

A 23 g bullet traveling 220 m/s penetrates a 4.2 kg block of wood and emerges cleanly at 140 m/s.

If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?

  • Physics -

    conservation of momentum:

    M*0+23*220=M*Vf+23*140
    M = 4200 grams solve for Vf

  • Physics -

    230

  • Physics -

    140 m/s

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A .22 rifle bullet, traveling at 373m/s, strikes a block of soft wood, which it penetrates to a depth of 0.125m. The block of wood is clamped in place and doesn't move. The mass of the bullet is 1.90. Assume a constant retarding force.How …
  2. Physics

    A 13 g bullet traveling 226 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 162 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
  3. physics

    A 13 g bullet traveling 235 m/s penetrates a 2.0 kg block of wood and emerges going 171 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
  4. physics

    A 23- bullet traveling 230 penetrates a 3.6 block of wood and emerges cleanly at 170 . If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
  5. University Physics

    A 8.3-g bullet, when fired from a gun into a 1.1-kg block of wood held in a vise, penetrates the block to a depth of 7.05cm. This block of wood is next placed on a frictionless horizontal surface, and a second 8.3-g bullet is fired …
  6. Physics

    A 13g bullet traveling 330 m/s penetrates a 2.0 kg Block of wood and emerges going 270 m/s . If the block is stationary on a frictionless surface when hit how fast does it move after the bullet emerges?
  7. Physics

    A 0.018 kg bullet traveling 222 m/s penetrates a 3.9 kg block of wood, and exits the block with a velocity of 72 m/s. If the block was stationary on a horizontal frictionless surface before impact, how fast does it move after the bullet …
  8. physics

    A 16g bullet moving horizontally at 400 m/s penetrates a 3.2kg wood block resting on a horizontal surface.(Figure 1) Part A If the bullet slows down to 300 m/s after emerging from the block, what is the speed of the block immediately …
  9. Physics - Mechanics

    A bullet of mass m is shot at speed v toward a pendulum bob of mass M. The bullet penetrates through the block and emerges on the other side traveling at speed v/2. 1. What is the speed v_block of the block immediately after the bullet …
  10. Physics - Mechanics

    A bullet of mass m is shot at speed v toward a pendulum bob of mass M. The bullet penetrates through the block and emerges on the other side traveling at speed v/2. 1. What is the speed v_block of the block immediately after the bullet …

More Similar Questions